How did Ben Franklin come to invent bifocal glasses?

Answers

Answer 1

Answer:

Benjamin Franklin is both farsighted and nearsighted.

Before the invention of bifocal glasses, people with both conditions have to constantly switch two different glasses which might felt inconvenient.

So, Benjamin Franklin tried to do something to deal with this situation. He tried to make a horizontal cut through the lens of each glasses and combined them into one pair of glasses. This one new pair glasses is what eventually called as the bifocal glasses.


Related Questions

PLEASE HELP!
What is different about the two groups of teens and how they work within their organizations?
Information from Article 1 to support the difference:
Information from Article 2 to support the difference:
I chose minutes that matter and defeating dragons, PLEASE SOMEONE HELP!

Answers

Answer:

Article One: Minutes that Matter

Article Two: Defeating the Dragons

Information from Article 1 to support the difference: Teens work with companies to raise funds for soldiers over seas.

Information from Article 2 to support the difference:Teens work as EMTs , saving people directly.

PLZ MARK AS BRAINLIEST THANK AND FIVE STAR :)

Answer They are different because, they both have different purposes of helping people.

Explanation:

Lucretia Mott and Elizabeth Cady Stanton organized the

first common school.

Seneca Falls Convention.

Oneida utopia.

first hospital for the mentally ill.

Answers

Answer:

Seneca Falls Convention.

Explanation:

hope this helps!! :D

Answer:
B) Seneca Falls Convention.
Included the whole page!

EDGE2022; Good Luck :D!!!

Which issue lead to Texas seceding from the union?
the reservation system
slavery
war with Mexico
corruption

Answers

the reservation system

Answer: Slavery.

Explanation:

After Abraham Lincoln was elected president of Texas, fear was created that the new Republican president might abolish slavery in Texas. Lincoln's policy alluded to such a sequence of events. That is why the leaders of Texas decided to carry out secession in that state. The Texas leadership was determined in its intentions to secede from the Union of American States.

What is the duty of an elected political leader at the federal level? Select all that apply.

to gain wealth and prestige
to build a new office in Washington D.C.
to uphold and act in accordance to the U.S. Constitution
to act in the best interest of the citizens that elected the leader
to enact local and state laws to improve all areas of the United States

Answers

Answer:

The last three

Explanation:

i am really sorry if any of them are wrong im only guessing.

what modern day countries were atleast partially controlled by the Inca civilization​

Answers

Answer:

Peru, western and south central Bolivia, southwest Ecuador and a large portion of what is today Chile.

Explanation:

the Incas incorporated a large portion of western South America, centered on the Andean Mountains. At its largest, the empire joined Peru, western Ecuador, western and south central Bolivia, northwest Argentina, a large portion of what is today Chile, and the southwestern most tip of Colombia

how fast does a candle burn ? time measured in minute.height of candle measured in centimeters at regular intervals of time ? independent , dependent or constants





I will give u 20 points

Answers

Answer:

Height of candle measured in centimeters at regular intervals of time for example, every five minutes

Explanation:

Radioactivity was discovered by Albert Einstein.

Answers

Answer: false

Explanation mark As brainliest

The process by which the human body gets oxygen and gets rid of carbon dioxide is called

Answers

Answer:

inhlation and exhalation or could be RESPIRATION

Explanation:

13. True/False: Because of their geography and location, Japan was
isolated/separate frorn most of the world throughout their history,

Answers

This is true because Japan, bombed the United States and were put in concentration camps

Answer:

true The reason being because Japanese believed that the rest of the world would contaminate their religion and henceforth be lost forever. To preserve this, they shut themselves off so religion would not have outside influences on them


The leader of the Populist Party in Georgia, who later went on to serve in the U.S. House of
Representatives, was
Tom Watson
Alonzo Herndon
Joseph Brown
Henry Grady

Answers

Answer:

Tom Watson

Explanation:

In the 1890s, Watson gained his popularity from series of activism that he done in order to improve the quality of life for poor farmers. This was a strong reason why the members of the populist party elected him as the party leader.

In 1891, Watson manage to won the election to be the members of the Congress. Making him became the United States representative for Georgia's 10th district

What 3 simple machines did Archimedes study?

Answers

Answer:

The idea of a simple machine originated with the Greek philosopher Archimedes around the 3rd century BC, who studied the Archimedean simple machines: lever, pulley, and screw. He discovered the principle of mechanical advantage in the lever.

Explanation:

How many years did the Holocaust last??

Answers

4 years

Explaination: started in 1941 ended in 1945

When was Pocahontas was born

Answers

Answer: Born around 1596, Pocahontas was the daughter of Wahunsenaca (also known as Powhatan), the powerful chief of the Powhatans, a Native American group that inhabited the Chesapeake Bay region. Little is known about her mother.

Explanation:

Which American Indian groups sided with the British and which sided with the French as the war began

Answers

Algonquins sided with the French and the Iroquois sided with the British and the colonists.

1.Which of the following factors has helped improve Bangladesh’s economy in recent years?
A.
new tariffs

B.
microlending

C.
shifting to a command economy

D.
increasing focus on agriculture
2.Which of these South Asian countries is an Islamic republic?

A.
Pakistan

B.
Bangladesh

C.
Sri Lanka

D.
Nepal
3.Why are poverty levels high in much of South Asia?

A.
high populations and low economic development

B.
lack of natural and human resources

C.
ethnic tensions and civil war

D.
outsourcing to other countries
4.Which factor has contributed to India's economic struggles?

A.
not investing in productive capital

B.
poor soil for farming

C.
a poorly developed infrastructure

D.
isolation from other countries

Answers

A because it is the only that has with economics other than c but c would be too practical therefore giving us the answer of choice A

The US interest in the Middle East...
A. To protect oil interest
B. To defeat the Iraqi Army
C. Liberate Kuwait
D. All of the above

Answers

D. All of the above

Was Maximus Aurelius considered a fair or
unfair ruler?

Answers

Yes he was know to have a spirit of a good emperor

4. Name the parts of the world which have high density of population. Give reasons.

please answer ASAP!​

Answers

Answer:

Many of the world's small island or isolated states have large populations for their size. Macao, Monaco, Singapore, Hong Kong and Gibraltar are the five most densely populated. Singapore has nearly 8,000 people per km2 – more than 200 times as dense as the US, and 2000 times that of Australia

Explanation:

The political party thought the 'rich and the wealthy" should have a say so in the government.

Answers

Answer:

Whigs

Explanation:

The Whigs party  was created in mid 19th century under the leadership of Henry Clay. The Whigs advocated for legislations that generally favored the private sectors (such as low tax rate, reduction of presidential power, subdivides for building infrastructure ,etc)

Because of this, they formed a strong supporter base among entrepreneurs and professionals. This made them often referred to as the party of the  "rich and the wealthy" By political oppositions.

What was the main purpose of Christopher Columbus's first journey across Atlantic in 1492?
A. To build an empire for a queen Isabella.
B. To find gold for the Spanish crown.
C. To learn more about the Indian people.
D. To locate a route around Africa.

Answers

Answer:

d. to locate a route around Africa

The main purpose of Christopher Columbus's first journey across the Atlantic in 1492 was to locate a route around Africa. Thus, option D is correct.

Who is Christopher Columbus?

Christopher Columbus was an Italian citizen who traveled across the sea and explored a lot of areas during his voyage.

Columbus took the journey across the Atlantic Ocean Out of area to find a route that would Africa, India, and other Asian countries. He also wanted to go to update to have more amount of resources and means to live a more upgraded life.

To Discover new doubt in many other countries the plants and fauna which are available in other countries and that are why he wanted to travel to Africa destination in the world emerald people who admired him a lot and financed his voyage.  Therefore, option D is the correct option.

Learn more about Christopher Columbus, here:

https://brainly.com/question/10813507

#SPJ2

PLEASE HELP ME. I WILL MARK YOU BRAINEST IF YOU GET IT RIGHT.
1. What did many European imperialists believe their empires brought to other parts of the world they ruled?
A. enlightenment and civilization
B. protection from revolutionary uprisings
C. liberty and happiness
D. financial stability in local economies

Answers

Answer:

Correct answer is A. enlightenment and civilization

Explanation:

Option A is correct as they believed that the regions they colonized were totally uncivilized and that they will bring civilization to them, with the ideas of enlightenment, which according to them they never had.

B is not correct as they were preventing rebellions.

C is not correct as they were not bringing liberty as they were actually taking it from them.

D is not correct as the economy that was strengthened was their own, not of their colonies.

10
Which of the following people would most likely vote for a member of the
Federalist Party?
A slave from Georgia
O A farmer from South Carolina
The owner of a factory in New York
O A member of Congress who wants more power for individual states.

Answers

Answer:

probably farmer from South Carolina

What does a conclusion do?
a.
Starts the text and catches the reader’s attention
c.
wraps up the text and restates the main idea
b.
reveals the main idea in a clear, easy-to-find manner
d.
none of the above


Please select the best answer from the choices provided

A
B
C
D

Answers

Answer:

c

Explanation:

you have to have the main idea restated to conclude and this is the end of the essay

Which is given goals to meet?
A administrative agencies
B federal agencies
C staff agencies
D line agencies

will give 20 points if you answer fast

Answers

Answer:

Staff agencies

Explanation:

Staff agencies are given goals to meet. Most people give themselves goals to meet in most aspects of their lives as well.

Answer:

C staff agencies

Explanation:

Please can you answer this please 60 brainly points

Answers

it’s A

(kajdnajdnnwjsn)

Why did airplanes take passengers away from ocean liners A.expensive B.cleaner
C.quieter D.faster

Answers

Answer:

D. faster

Explanation:

Typically, the cost of traveling through ocean transportation are cheaper since average ships could take on much larger number of passengers on every route.

But Airplanes are much faster, which often become the preference for people who travel for business purpose. Most domestic planes between states usually only take hours to complete while using ocean liners could take days for the passengers.

Who seems to be providing the information included in this article? How might the sources for the article influence the content of the article?

Answers

Answer and Explanation:

Hello. You did not enter the article to which this question refers, which makes it impossible for it to be answered accurately. However, I will try to help you in the best possible way.

Who provides information contained in an article, are other articles or other forms of text created by experts or research involving the topic that the article is presenting. It is for this reason that the sources of research are so important, as they are the ones that must provide true information for the construction of a new article.

Thus, the content of the article is influenced to inform proven facts, tested by trained people. Thus, the article is considerably relevant and efficient.

PLEASE ANSWER! WILL GIVE BRAINLIEST IF IT IS CORRECT!!

Answers

D they both fought for women's rights.

Answer:

D. They fought for Women's rights

Explanation:

What event brought the USA into WWII???

Answers

Answer:

The attack on Pearl Harbor

Explanation:

What does Doctrine Monroe symbolize

Answers

Answer:

The Monroe Doctrine, in asserting unilateral U.S. protection over the entire Western Hemisphere, was a foreign policy that could not have been sustained militarily in 1823. Monroe and Adams were well aware of the need for the British fleet to deter potential aggressors in Latin America.

Explanation:

Other Questions
The cell membrane functions most like a(n)A.) security guardB.) brick wallC.) painterD.) delivery truck Where is Istanbul situated Ayana received some gift cards for music and movie downloads for her birthday. Using one of them, she downloaded 20 songs and 3 movies, which cost a total of $73. Using another, she purchased 5 songs and 17 movies, which cost a total of $197. How much does each download cost? Read three integers from user input without a prompt. Then, print the product of those integers. Ex: If input is 2 3 5, output is 30. Note: Our system will run your program several times, automatically providing different input values each time, to ensure your program works for any input values. See How to Use zyBooks for info on how our automated program grader works. Besides energy, what else is food used for? Early Chinese calligraphy consisted of drawings that A. represented one or several words in the Chinese language. B. could be taught only to Hindu and Buddhist priests. C. were considered sacred to Chinese culture and religion. D. had to include at least three straight lines and a circle. PLEASE PLEASE HOW MANY TIMES CAN I SAY PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Answer like Answer 1.___________Answer 2.___________Answer 3.___________Answer 4.___________Answer 5.___________ Which element is classified as a transition metal?A) lithium (Li)B) zirconium (Zr)C) tellurium (Te)D) xenon (Xe) Which of the following is true about the treaty of Versailles (BLAME) A. Germany chose was to take blame B. Germany was to admit defeat C. Germany had to take full responsibility for the war D. Germany and its allies were blamed for the war Which expressions are equal to 4y + 8 + 4y + 8? Which of the following is Juan Crisostomo "Crisot" Soto's works? The number of atoms in 10. grams of calcium is equal to 6.0 x 1023 multiplied by which number? PLEASE ANSWER THIS ITS DUE IN 7 MINUTES!! THANKS!! Which one of the following symbols is a quarter rest?O A.O B.O c. 4O D. The following are advantages to asexual reproduction: HELP ME PLEASEEEE I NEED IT ASAP (British Lit): What caused a change in attitudes and assumptions of the 18th Century Classicism and Rationalism? what is the difference between the pressure exerted by a soild and by a liquid ? Write a method named removeRange that accepts an ArrayList of integers and two integer values min and max as parameters and removes all elements values in the range min through max (inclusive). For example, if an ArrayList named list stores [7, 9, 4, 2, 7, 7, 5, 3, 5, 1, 7, 8, 6, 7], the call of removeRange(list, 5, 7); should change the list to store [9, 4, 2, 3, 1, 8 Define what a static exercise is & give 3 examples.